-7(2t+3)=21

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Solution for -7(2t+3)=21 equation:


Simplifying
-7(2t + 3) = 21

Reorder the terms:
-7(3 + 2t) = 21
(3 * -7 + 2t * -7) = 21
(-21 + -14t) = 21

Solving
-21 + -14t = 21

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 21 + -14t = 21 + 21

Combine like terms: -21 + 21 = 0
0 + -14t = 21 + 21
-14t = 21 + 21

Combine like terms: 21 + 21 = 42
-14t = 42

Divide each side by '-14'.
t = -3

Simplifying
t = -3

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